4 m was cut from a piece of fabric. This made up 20% of the whole piece. How much fabric was in the piece?

We solve the problem with the following principle:
4 meters of fabric is 20%
x meters of fabric is 100%
(4 × 100%): 20% = 400: 20 = 20 meters of fabric was in the piece
Answer: 20 meters.

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